Bedspring construction



Sept. 24, 1940. s. RADUNS BEDSPR'ING CONSTRUCTION.

Filed A ril 25, 1938 2 Sheets-Sheet 2 Solo/2201a INVENTOR AT RNEYPatented Sept. 24, 1940 PATENT OFFICE BED SPRING "CONSTRUCTION SolomonBladuns, Brooklyn, N. Y., assignor to Greenpoint Metallic Bed Company,Inc., Brooklyn, N. Y.

Application April 25, 1938, SerialNo. 204,018 r 4. Claims. (o 5.252)

The present invention relates to an improved spring constructionparticularly designed to be utilized in beds.

It is among the objects of the present invention to provide aninexpensive bedspring construction which will be durable, comfortableand will be balanced against distortion in any direction, even thoughthe spring be unevenly loaded at different parts thereof.

Another object is to provide a bedspring with an improved stabilizedconstruction which will eliminate lateral displacement of the upperportion of the spring without causing undue stress upon the lower springstructure and without twisting or disarrangement tending to break orrupture or cause damage to the spring construction as a whole, eventhough the spring be substantially unbalanced in'its loading.

Other objects will be obvious or'will appear during the course of thefollowing specification. In accomplishing the above objects it has beenfound most satisfactory to provide a relatively rigid. lower frame ofsubs'tantialj'strength with 0 cross braces to support the bottom of themain vertical coil springs. The centrally positioned main coil springsare preferably provided with a lattice-like platform or frame whichisclamped between the closed coils thereof. This plat-- form is preferablyconnected by elongated small diameter coil springs to the bottoms orlower portions of the peripheral main vertical coil springs. The upperframe is more rigid than the center intermediate frame, but less rigidthan the bottom frame.

To the upper frame are conn cted the outside edges of the top coils orrungs of the main coil springs, the top rungs preferably beingv in theplane of the upper frame. v

The top or upper frame is preferablystabilized against the lateraldisplacement by aplurality of downwardly and inwardly inclinedstabilizer bar elements which have a four-point diagonal resilientsuspension substantially in the plane of the lowermost frame.

In the preferred construction, the lowermost end of the inclinedstabilizer is bent into a horizontal plane and is positioned in theplane of the lowermost frame. This bent end is con- 5 nected by fourdiagonally extending coil springs to the lower rung or coil of theintermediate main coil springs. I

In the drawings which illustrate one of the various possible embodimentsaccording to the 55 present invention, but. to which the. presentinvention is by no means restricted, since many variations,alterations/and modifications might all be made within the spirit andscope thereof:

' Fig. 1 is a top plan view of the spring construction with the springbeing considerably *5- shortened longitudinally and laterally to enablea more compact showing,

Fig. 2 is: a side sectional View upon the line 2-2 of Fig. 1, Fig.3 is afragmentary bottom view upon 10 the line 3-3 of Fig. 2, Fig. 4 is atransverse sectional view upon the line 4-4 of Fig. 1 taken through thelongitudinal axis of the spring.

Referringto the drawings, the spring consists 15 of a lower or bottomrigid frame A, a less rigid upper or top frame B and an intermediatestrip metal lattice frame or platform C. The main large'diametervertical coil springs D connect these frames and. support the upperframe B and the intermediate frame C from the lower frame A.

The stabilizers E are connected between the upper frame B and the lowerframe A. The stabilizers E are resiliently attached to the bottoms ofthe main coil springs D and they preventlateral displacement of theupper frame B.

' The lower frame A consists of a rectangular bar element H] of angularcross section, as best shown in Figs. 2 and 4. The bar [0 is riveted so7 at B by the vertical flanges II to the upturned ends l5 of the crossmembers 12. The cross members I2 are bent horizontally at l4 adjacentthe frame l0. v The intermediate portions "5 of the cross members l2 aretwisted at l'l into a vertical plane, and these vertical portions 16 atl8 receive and are connected to the lowermost rungs or coils IQ of theintermediate coil springs D. The lower rungs 20 of the peripheral coilsprings F restupon the horizontal portions !4 of said cross memberslZ.

The upper portions of the vertical cross member I6 are also recessed at2| (see' Fig. 4) to receive the upturned portions 22 of the crossingwires 23. These wires 23 are substantially in the plane of the lowerframe A and they are attached at their looped end portions 24 to thevertical flange ll of the rectangular element Ill.

The wires 23 support the peripheral coil springs F, along the end by theupturned portions 25 projecting inside of the lowermost coils 26, asshownin Fig. 4'. Between the lowermost coil 26 and the upturned 10 1125along theshort sides of the frame A extend the transverse wires 21 toform a permanent connection. The transverse wires 21 are connected atthe ends of the structure A to the vertical flanges l l by loops (notshown) which are similar to those indicated at 24 in Fig. 4.

The longitudinal wires 28 along the long sides of the frames A, as bestshown in Figs..2 and 3, have down-turned loops 29, which extend belowthe horizontal portions [4 of the cross members l2 and engage the edgesthereof. The wires 28 on each side of the loops 29 extend over the lowerrungs 20 of the peripheral main springs F and lock them in position uponsaid cross members I 2.

The middle coils 30 of the main coil springs D are brought closertogether so as to clamp the intermediate lattice frame C in position.The lattice frame is formed of the crossing strips 3| and 32, the strips3| having elevated portions 33 to receive the longitudinal elements 3|inside of the closed coils 30 of the intermediate springs D.

The ends of the strips 3| and 32 are respectively connected by means ofthe downwardly extending elongated small diameter coil springs 34 and 35to the lower rungs or coils 36 and 31 adjacent to, but removed from, thelowermost rungs of the peripheral springs F.

By including the springs 34 and 35 extending downwardly from theintermediate lattice platform C, it has been found that the lower portion of the bedspring is stabilized and will most readily resist thedownwardly applied deforming stresses without loss of comfort, with theupper portion of the bedspring above the lattice C being underrelatively less tension than the lower portion below the lattice 0.Moreover the load upon the stabilizers E is considerably lessened.

The upper frame B consists of a rectangular ring 38 less rigid than thebottom frame B. The rectangular ring 38 is tied at 39 to the sides oredges of the uppermost coils 40 of the peripheral coil springs F,preferably at points at least 90 away from. the points 4| where thesprings F are tied together at their uppermost rungs or coils. The topcoils 40 of said coil springs B are connected to the intermediatesprings D by the crossing diagonal springs 42, which are connected orinterlaced together at 43. It will be noted that the peripheral coilsprings F are devoid of direct connection to each other, while thevarious intermediate springs D are not only connected to each otherbythe crossing diagonals 42, but are also connected to the peripheralsprings F.

It will be noted by referring to Fig. 1 that the bottom frame by reasonof the cross beams l2 and the cross wires 21 and 28 will form a seriesof squares, which coincide with the squares formed by the intermediatelattice C.

It has been found that to obtain maximum stabilization, the lowerhorizontally-bent ends 44 of the stabilizers E should be centrallylocated in said squares 45 removed from the frame A by the distance ofabout one or two squares 45. The lower flattened ends 44 are preferablyprovided with the holes 46 which receive the inner ends of the coilsprings 41, which at their exterior ends are connected to the lowermostrungs l8 of the intermediate coil springs D.

The stabilizers E as shown have vertically extending portions 48,diagonal extending portions 49 and they terminate in a loop 50 which maybe rigidly or pivotally connected to the frame B.

Many other changes could be effected in the particular features ofbedspring construction designed, and in methods of operation set forth,and in specific details thereof, without substantially departing fromthe invention intended to be defined in the claims, the specificdescription here-in merely serving to illustrate certain elements bywhich, in one embodiment, the spirit of the invention may beeifectuated.

What is claimed is:

1. A bedspring construction comprising a relatively rigid rectangularlower frame, a relatively rigid rectangular upper frame, a plurality ofmain vertical coil springs of increasing diameter upwardly extendingbetween said lower frame and said upper frame connected to and supportedat their lower ends by the lower frame and in turn connected to andsupporting the upper frame at their upper ends, an intermediate framepositioned between said upper frame and said lower frame and attached tothe middle portions of said main coil springs, and an obliquelydownwardly extending stabilizer bar resiliently connected by fourdiagonally disposed short horizontally positioned coil springs to thebottoms of four of said coil springs and directly connected to the upperframe.

2. A bedspring construction comprising an upper frame, a lower frame, aplurality of main vertical coil springs extending between said upperframe and said lower frame connected at their upper ends to said upperframe, a lattice work in the plane of and connected to said lower framesupporting the bottoms of said coil springs, said lattice work forming aplurality of squares and downwardly inclined stabilizer elementsattached at their upper ends to the upper frame and positioned at theirlower ends in the middle of the squares of said lattice, the lower endsof said stabilizer bars being resiliently connected to the lower turnsof said coil springs at the corners of said respective squares by shortdiagonally extending coil springs.

3. A bedspring construction including an upper frame, a lower frame andstabilizer constructions comprising obliquely downwardly extending barsdirectly connected to said upper frame at their upper ends and extendingto the plane of said lower frame, and a plurality of said vertical coilsprings between said upper and lower frames connected to and supportedat their lower ends by the lower frame and in turn connected to andsupporting the upper frame attheir upper ends, and means resilientlyconnecting said bars to the lower frame, the means connecting said barsincluding four diagonally disposed short horizontally positioned coilsprings connected to lower turns of four adjacent main coil springs.

4. In a bedspring construction of the type having an upper frame and alower frame and a plurality of main vertical coil springs connected toand supported at their lower ends by the lower frame and in turnconnected to and supporting the upper frame at their upper ends, anoblique stabilizer bar construction extending between said upper frameand said lower frame, said coil springs being arranged in rows and saidbar extending beyond two successive rows of said main springs and beingsupported between the second and third rows from. its point ofattachment to the frame by four diagonally disposed short horizontallypositioned short coil springs connected to lower turns of four adjacentmain coil springs.

